The image formed by a concave mirror is located -11.30 cm behind the mirror when an object is 3.70 cm in front of the mirror. What is the focal length of the mirror?

Amachine, modeled as a simple spring-mass system, oscillates in simple harmonic motion. its acceleration is measured to have an amplitude of 5,000 mm/s with a fre- quency of 10 hz. compute the maximum displacement the machine undergoes during this oscillation.

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present